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Another Thermo

  • #1
An aluminum calorimeter of mass 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 12.0°C. Two metallic blocks are placed into the water. One is a 40.0 g piece of copper at 80.0°C; the other block has a mass of 13.0 g and is originally at a temperature of 116.0°C. The entire system stabilizes at a final temperature of 15.0°C.



Here's what I have so far:

(mcΔT)A + (mcΔT)W = (mcΔT)Cu + (mcΔT)Unknown
 

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